n8n Website Uptime Monitor: Telegram & Email Alerts

Stay instantly aware when your websites go down—this n8n workflow checks uptime every 5 minutes and alerts you via Telegram and/or email

This n8n Website Uptime Monitor: Telegram & Email Alerts workflow continuously monitors multiple domains/URLs, records uptime and response time history in n8n Data Tables, and sends alerts only when a site’s status changes (or on the first unhealthy check).

What this workflow does

• Runs on a schedule (every 5 minutes) or can be triggered manually.
• Reads your website list from the configured websites field (comma- or newline-separated).
• Normalizes targets into HTTPS URLs and applies timeout/slow-response thresholds.
• Checks each website via HTTP and retries failures up to three times.
• Classifies results as UP, SLOW, or DOWN using HTTP status codes and response time (and captures any error message).
• Persists data to n8n Data Tables: writes every check to uptime_history and upserts the latest status into uptime_state (including incident start time).
• Notifies only on meaningful changes by comparing current status with the previously stored state.
• Sends alerts to Telegram and/or via email. Telegram destination allowlisting is supported, and delivery failures are logged in execution output.

Use cases

• Alerting SaaS teams when customer-facing endpoints become DOWN or SLOW.
• Monitoring multiple production URLs from a single n8n automation.
• Creating an audit trail of uptime by analyzing uptime_history over time.

Technical details

• Nodes/Integrations: if, set, code, telegram, data table, email send
• Data storage: n8n Data Tables (uptime_state, uptime_history)
• Alerting: Telegram (bot credential + telegram_chat_id and telegram_allowed_chat_ids) and/or email

Setup in seconds

Enter your domains/URLs in the websites field. Optionally enable Telegram alerts and configure the Telegram bot credentials and allowed chat IDs, plus email delivery settings if needed.